403140523 has 16 divisors (see below), whose sum is σ = 428302336. Its totient is φ = 378846720.

The previous prime is 403140503. The next prime is 403140547. The reversal of 403140523 is 325041304.

It is a cyclic number.

It is not a de Polignac number, because 403140523 - 2⁹ = 403140011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 403140494 and 403140503.

It is not an unprimeable number, because it can be changed into a prime (403140503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256486 + ... + 258052.

It is an arithmetic number, because the mean of its divisors is an integer number (26768896).

Almost surely, 2^403140523 is an apocalyptic number.

403140523 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

403140523 is a deficient number, since it is larger than the sum of its proper divisors (25161813).

403140523 is a wasteful number, since it uses less digits than its factorization.

403140523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 403140523 is about 20078.3595694469. The cubic root of 403140523 is about 738.7295726823.

Adding to 403140523 its reverse (325041304), we get a palindrome (728181827).

The spelling of 403140523 in words is "four hundred three million, one hundred forty thousand, five hundred twenty-three".